Controlling mechanism for sound-reproducing machines



May-15,19; I 1,455,631

v 'r-. H. LOY

CONTROLLING MECHANISM FOR SOUND REPRODUCING MACHINES Filed Dec. 28 1920 6 Sheets-Sheet 1 May I5, 1923.

T. H. 'LOY CONTROLLING MECHANISM FGR SOUND REPRODUCING MACHINES 6 Sheets-Sheet 2 Filed Dec.' 2 1920 T. H. LOY

CONTROLLING MECHANISM FOR 'SOUND REPRODUCING MACHINES Filed Dec. 28 1920 6 Sheets-Sheet 5 T. H. LQYV CONTROLLING MECHANISM FOR SOUND REPRODUCING MACHINES Filed Dec. 28 1920 6 Sheets-Sheet 4 V May 15, 1923.

T. H. LOY

CONTROLLING MECHANISM FOR SOUND REPRODUCING MACHINES s Sheets-Sheet 5 Filed Dec. 28 1920 w I Gamma May 15, 1923. 1,455,631 T. H. LOY

CONTROLLING MECHANISM FOR SOUND REPRODUCING MACHINES I Filed Dec. 28 1920 6 Shets-Sheet 6 Patented May 15, 1923.,

THOIVLAS H. LOY, 0F BELLAIBE, OHIO.

CONTROLLING IEECHANISM FOB SOUND-REJPRODUCING MACHINES.

Application filed. December 28, 1920. Serial No. 433,709.

To all whom it may concern:

Be it known that I, THOMAS H. LoY, a citizen of the United States, residing at Bel laire, in the county of Belmont and State of Ohio, have invented certain new and useful Improvements in Controlling Mechanism for Sound-Reproducing Machines, of which the following is a specification.

The present invention pertains to improve ments in controlling mechanisn'i for sound reproducing machines.

The invention is characterized as to novelty by the provision of means which, speaking with reference to the cycle of their operation and not in the light of their importance, are designed to, firstly, control the co-action of the reproducer with the initial sound grooves of the record; secondly, to control the automatic application of the brake means to the record support in accordance with the termination of the sound grooves; thirdly, to effect repeat movement of the reproducer at the will of the operator in the event repetition is desired; and, lastly, to provide for a subsidiary brake operation under the manual. control of the operator at any time during reproduction movement and as an incident to the natural return of the rcproducer to substantially record beginning position.

I am aware that it has heretofore been. proposed to accomplish certain of the foregoing results, at least, but my aim'has been to produce these same ends in a more efficient and satisfactory manner through the instrumentality of mechanism readily adaptable to well known sound reproducing instruments, so coordinating the different controlling units or devices as to greatly facilitate the playing of sound records for various pur poses and at the same time enable greater accuracy or positiveness of the sound reproduction, speaking with regard to the application or removal of the stylus in correspondence with the actual sound reproducing portions of the record grooves.

In carrying out these and other objects which will become more apparent as this description proceeds, l contemplate accomplishing the results by mechanism operable either entirely mechanically or electro-mechanlcal'ly.

For a full understanding of the present invention, reference is to be had to the following description and accompanying drawings in which Figure 1 is a top plan view of a sound reproducing mechanism embodying my present invention;

Figure 2 is a bottom plan view, showing more clearly the details of construction of that portion of the mechanism which is supported beneath the supporting plate;

Figure 3 is a view similar to Figure 1 upon an enlarged scale;

Figure 4; is a rear elevation of the reproducer feed and repeat controlling unit or device;

Figure 5 is a detail view in elevation of the levers controllii'ig the elevating and return of the reproducer to the initial or playing position and the co-acting cams therefor;

Figure 6 is a sectional view of the line 66 of Figure l;

Figure 7 is adetailed perspective view of the clutch pawl and releasing arm;

Figure 8 is a side elevation of the reprodu'cer;

Figure 9 is a sectional view taken about on the plane indicated by the line 99 of Figure 3; and

Figure 10 is a diagrammatic view of the electric circuit controlling the repeat and brake application operations.

igure 11 is a detail view ofone of the levers for effecting the return of the reproducer, disclosing a means for adjusting the extent of return.

Figure l is a fragmentary View on an enlarged scale more clearly showing the attachment for the repeat control device de signed to cooperate with the brake mechanism, eliminating necessity for differential adjustment of the record termination indicator.

F igure 13 is a detail view of the attachment referred to in connection with Figure l2.

Figure '14- is a detail sectional view of the circuit breaker somewhat enlarged.

Figure 15 is a modified form of indicator feed worm. v

Throughout the following detailed descript-ion, and on the several figures of the drawing, similar parts are referred to by like reference characters.

General construction.

. The present features of the improvements are designed to be applied to a well known type of'sound reproducing instrument, the general features of which will be referred to briefly in order to, obtain a generalunderstanding the mechanism with which my invention is designed to co-act. It isto be understood, however, that these improvements may readily be attached to other well known mechanisms and therefore, I do not desire to be restricted with regard to the modifications that may readily be made within the scope of the invention and the claims hereto appended.

.Referring to Figures 1- to 3, A represents a suitable supporting plate which is usually mounted upon or within a casing or cabinet from which is supported the motor B operating the drive shaft C from which the driven shaft D is actuated, the latter shaft having mounted fixedly thereon adjacent to an end the worm E wltli which the segmental 'l'ElCk F engages. This rack is pivotally supported by the bracket G upon a vertical shaft H which is the supporting shaft for the-horn and reproducer of this type of sound reproducing mechanism. The shaft H projects through the plate A and carries at its upper extremity the operating handle I provided with a cam J designed to elevate the seen and the horn and reproducer carried thereby so as to permit free movemechanism carries the conventional reprodu'cer M which is provided with a weight or stylus float N having a forwardly extending projection 0 adapted to cooperate with the supporting loop or ring I when the reprodu-cerar-m is elevated to bring the stylus out of cooperative relation with respect to the sound record.

. Thus far the mechanism described is of conventional form and the operation of the mechanism is well known. It is only necessary, in other words, that the reproducer be moved to a point approximate the first groove 'of the sound record, whereupon the handle I is elevated to lower the reproducer into playing position, the segmental rack F which is carried byshaft'l-l being simultaneously brought into engagement with. the

worm E which through the operation of the motor causes the reproducer. to traverse the record at a predetermined rate in playing the Brake mwcham'sm.

The brake mechanism which is employed in carrying out the present invention follows somewhat closelythe type and construction disclosed in my previous Patent No. 1,- 349216, dated August 10, 1920. The mechanism consists primarily of the brake member 1 having a shoe 2 at its end which is adapted to cooperate with the rim of the turn table to hold the same against movement in the customary manner. The brake member is provided with-a downwardly bent flange 8 operating in an opening't' of a locking member 4. A spring 5 is connected at one end to the tail piece 6 ofthe brake member and. at its opposite end to the locking member a as clearly shown in Figure 3 of the drawing so that the latter element is drawntoward the brake memberas an incident'of the tension exerted by the spring,' while this same tensiontends to maintain the brake shoe in contact with the turntable. Beneath and pivotally'mounted upon the brake member is a brake setting arm 7 hav-' ing nearits end notch 8 with which the brake releasing means-hereinafter described is adapted to interlock or interengage in the operation of the device. The brake setting arm 7 is providedjwith an extension 7" from which is-upturned a stop 7"-engageable with the brake-member l to limit' the movement of the brake setting arm under the actuation of the spring 8. Fixedly mounted uponthe shaft H so as to revolve therewith is arranged the brake releasing means substantially identical in construction with the equivalent part of the. mechanism 'shown'in my previous patent above referred to. I The plate 9 forming a part of this mechanism is provided with a series of-indications 10 with which an indicator or pointer 11 co-acts for the purpose of determining as in my previous patent the point of applicationof the brake with respect to the terniination'of the sound reproduction,the rear end of theindicator for this purpose being provided with an extension 12 which isdesigned to impinge the extremity of the locking lever or member l as the release means revolves in the playing operation.

in a position to engage the brake member heplate E); furthermore is pro-I vided w th an arm 13 which s adapted'to when the latter is shifted in the operation of the machine away from the turn table. The pawl is provided with an oppositely ex;- tending arm and is placed under tension by the spring 16 so that said pawl will interlock with the depending flange 3 of the brake member when shifted in the manner just referred to.

' Record bcgimiiug guide.

Passing now to the special features ol the present invention I employ means for positively directing the co-action. of the reproducer with the initial part of the record groove so that when the instrument is to be played the reproducer may be deposited in this groove according to the adjustment of the guide means for this purpose. In the type of apparatus which is disclosed in this application it is customary to use sound records which are so manufactured that the sound groove starts sul st-antially alwa s at a particular point in each. '1' production. However, in playing the instrument it is necessary for the operator to guess about the point where the groove and it is very unsatistactory to be compelled to shift the reproducer from point to point until the stylus drops into the proper place for the beginning of the sound reproduction. it is quite frequently the case that the is placed upon the smooth por ion adjacent to the periphery of the diskand moved by the reproducer feeding mechanism u;

it arrives at and passes into the set groove. Ordinarily, however, the sound records must be rotated several times before the sound portion-of the grooves is reached. This is unnecessary wear upon the stylus and in some instances the sound given oil by the instrument in moving over the groove detracts from the reproduction of the music.

lVith this in View I provide, as above premised, a guide member so that when the latter is properly adjusted for a certain size record the re irodurer may he brought to the proper point at all times to begin the reproduction oi"? the music without delay and with great facility. While the specific means for this purpose forms the subject n'iatter a co-pending application,neverthel said means will. be here 1 st forth in its cooperative relation to the mechanism involved in this application. hlounted upon the base plate and pivotally secured thereto at 1.7 I provide a lever 1.8 formed at one end with a lateral slotted extension 15) through which an adjustment screw 20 e);- lends for the purpose of enabling adjustment of the device. Adjacent this same end of the lever I position a stop pin or guide 21 which is loosely mounted for tree movement vertically for reasons hereinafter set forth, said pin projecting downwardly th ugh the base plate sufficiently far to arcuziitely.

co-act with the edge of the segmental rack member F when the latter is in its elevated position and the tone arm is free to move in other words when it is desired to shift the reproducer inwardly from its outermost position toward the initial groove of the sound record, the reproducer is manually shifted until the edge of the rack member F impinges the pin 21, whereby the operator is advised that the stylus has reached the point :tor its deposit in the beginning of the sound groove. Thereupon in the natural operation of the instrument the lever I is raised causing the reproducer, as well as the raclc member to be lowered, the latter riding along the surface of the pin against which it is held hy the operator until the edge of the rack member escapes h ,ath the lower end which ust 01. a proper length to correspond with the point o1"? deposit of the stylus in the sound groove. The rack heing now in en gagement with its worm the repix'iducer is free to travel inwardly with. respect to the center of the sound record. id hen the inner end of the sound groove is reached and the J reducer is raised the surface the rack member l? is brought into contact with the lower end of the pin which is likewise elevated by contact with the member F- As the ijeproducer is brought to its outermost inoperative position the pin will escape the inner end of the rack and thus drop to a position where it will lie in the path ot the edge of this rack member to he impinged thereby in a subsequent movement inwardly of the reproducer to playing position. The adjustment which is thus obtained is accurately determinable for beginning the reproduction at the initial portion oi the sound reproducing, groove. I

I prefer that this record beginning stop ijll. ment for recoitt'erent diameters altr ough on the type of instrument utilized for pin j a'kation purposes this is not essential, for the reason above stated that the records with. a laterally projecting ad usting arm 22 cooper-alum w th the indicator plate or lieeper 23 w inch is suitahl provided with indicia dosu, g the dillerent diameters of sound records.

Repeal 'rn'eciumz'mi. The mechanism which has been. described above is complete for the single reproduction of sound records, but one of the essential features ot the present invention resides 7 in the provision of means whereby a record or any portion thereof may be repeated one or more times. The uses of repeat mech anism of this character need not be specifi cally referredto owing to the fact that they are well known at present. Referring to Figures 2 and 7 otthe drawings, the shaft D which is driven by means of-the gear 2 is rovided with a clutch including I an the spring actuated detent and pawl 26 engageable in the toothed wheel 27. The detent and pawl referred to are-mounted upon a shaft 29 in turn carried by the annular collar30 located at the end of what 1' term for the purposes of this description the repeat unit. This unit comprises a. hollow shaft. 31 lo'osely mounted upon the driven shaft D providedwith the cam which is adapted to co-act with the lifting lever 33, a second cam 34- cooperative with an adjacent bellorank lever 35 and the carry over worm or indicator feed means 36. Thus it will be apparent that whenever the pawl 26 is interlocked with the wheel 27, this unit will be operatively connected to revolve with the driving shaft D. Under normal operation of the reproducing instru ment, or more strictly speaking during playingof the record and the traverse of the reproducer thereover, the unitis held relatively stationary by engagemei'it with the detent 25 of'a depending arm 37 which, in the construction herein illustrated, is pivotally. secured at 38 upon thelrear extremity of the latch or looking lever it I (see Figure 3). Its pivotal mounting, however, is essential only where there is an electrical operation of this part, as later described,

independently of the movementof the locking lever, but in its purely mechanical 0peration the arm 37 may be considered as a relatively immovable part of the lever 4. That it may assume such relation in the operation of the lever, the horizontal portion 38 is bent upwardly at 39 so as to abut against the adjustment screw 40 mounted in a flange 41 on the edge of the lever l, the part 39 being yieldingly held against its stop by the spring 42. I

Reverting now to the co-action of the arm 37 with the detent, the arms bent extremity stands in front of the detent 25 vwhen functioning to hold the repeatunit in unclutched relation to the shaft D, but a very slight movement of the opposite end of the locking member at will transmit sutficient movement to this arm'to release the "detent, whereupon the unit is clutched to the 'shaft resulting in rotation of the cams 32, 34, and worm 36. The cam 32, becon'ies operative, first, engaging with the lifting lever 33, which ispivotally mounted upon the depending bracket 43, the opposite end of'said lever being engaged with the supporting, shaft so that asithe caro' depresses trolled by the "adjustingscrew 47 m an obvious manner, and naturally where a different size of record disc ishplayed, this screw 47 may be ad usted to insure the return or the reproducer arm to the, proper osition for the commencement of the sound" groove in such record disc;

Thus the vertical movement of the lever 35 is transmitted intoxhorizontal movement of the lever l5,'\ vhich in turn brings about the actuation of the reproducer arm'in a di rection toward the periphery of the record disc. The shape of the camj3 l determines the reverse novement of the reproducer ac.- cording to the adjustment which has just been mentioned so that it will return said reproducerto the precise point for the stylus to engage in the beginning of the sound groove, or that P01115111 thesame where the sound reproduction commences; That is to say, the'reproducer will be moved backwardly to a point over the commencement of the groove andat, this moment,*owing to the shape of the cam 32, the end of the cooperating lever 33 rides ofl' of. the same,

allowing the; shaftll and the reproducer to be lowered so that the stylus drops into the sound groove and therack F is again in inter-meshing. relation with the worm' E.

This movement to and fro ofthe reproducer in repetition would continue to the limit'of T- Y the control of the indicator feed worm 36 but for the interposition of the indicator slide arm 4E8 which forms a part'of the mechanism now to be specifically-set forth.

Repeat indicator.

Upon the surface of the support ad jacent to the locking lever is fixedly mounted an indicator plate 49 having thereon indicia designated 50 tor'indicating the number of timesrepetition is desired. Pivotally secured to move over this plate isya manually operable adjusting arm 51 'hav-- ing a laterally extending pointer 52 cooperating with the indicia just mentionedf The opposite end of the adjusting member 51 is connected to a slotted slide plate 53 through the instrumentality of the link 1 54. Guide screws 55 extend throughthe slots of the plate-54 so as to permit ready" movement of this plate under the actuaon of t e edits i s me berwere her of times.

this slide plate which carries the depending arm 48 hereinbefore descrlbed.

.' The arm 48 extends through the support A to a point adjacent the repeat unit and particularly its indicator feed worm 36 with which linger 5c is adapted to co-act by engagement with the respective spirally arranged ribs or threads 35. p

it will be observed that these ribs, socalled, extend only partway around the worm and the arm 4-8 is thus capable of movement laterally without interference of the worm whenever the repeat unit is in unclu'tched or inoperative position. The range of movement of the arm 18 is best shot in Figure and in the dotted line position of said figure the arm occupies such relation to the worm that no repeat action takes place. This corresponds to the position which it assumes when the indicator pointer 52 is moved toward theright to the Figure 1. At such adjustment the record will be played but once and then the mechanism stopped by the brake as will be more fully set forth. The opposite extreme position of the part 56 beyond the last'thread or rib, represents such adjust ment of the repeat mechanism as will cause the record to be repeated an indefinite numlntermediate positions are capable of being taken by this arm ann will determine the number of times the repeat operation is performed, each complete traverse of the reproducer causing a step-by step movement of the arm toward the dotted line position under the control of the re neat mechanism until the arm 48 arrives at the said dotted line position when it functions to permit ofthe application of the brake under the control of the release means 9. or more strictly the element 12 thereof.

lll 'echam'cal operation.

At this point itis well to obtain a clear understanding of the operation of the mechanism functioning to repeat the playing of a record a plurality of times.

tarting from the beginning the operator takes the desired sound record and places it upon the turn-table in proper position, the tone arm or reproducer being moved over to its inoperative position beyond the edge of the turntable. The record, as explained in my previous patent herein mentioned, preferably contains an indication thereupon which is designed to indicate the termination of the sound groove of that particular record in accordance with the indicia which is provided for upon the release plate 9. For example, if the record bears the numeral 15, the pointer 11 would, in accordance with my method of the previous patent, be moved to the point 15 upon the indication scale 10. This determines the relationship of themember 12 with respect to the loclring lever i, or the point when these parts co-act to disengage the brake member from its nonbraking position and allow it to cooperate with the turn table. However, in the repeat operation which is to be described, it is obviousthat the brake is not to be applied to the record turn-table until the repeat operations desired are complete, so that i arbitrarily set the pointer 11 at a position represented, for example, by two numerals less than 15, in order to insure that the repeat mechanism will become eifective. Having positioned the record the reproducer is now moved inwardly, its feed rack F being freed of the feed worm, until such rack impinges the stop pin 21 which immediately advises the operator of the position that the reproducer is to be dropped into contact with the record. it is quite clear that the operator does not require any skill or even any active attention to the position of the reproducer stylus when this stop is employed. Holding the reproducer at the position just mentioned the handle I is raised allowing the shaft H to drop, the reproducer to likewise move, and the rack F to engage with its worm E. During this inward movement of the reproducer the arm 13- is brought into engagement with the brake setting arm 7 in the manner shown across the record toward the axis of rotation under the feeding movement of the rack F and its worm until the termination or approximate termination of the sound groove is reached, at which pointthe member 12 impinges the end of the locking lever 4 and imparts to the latter preliminary movement. This movement is sufiicient to set the repeat mechanism into operation but is insuilicient to disengage the pawl 15 from the brake member. In other words, as hereinbefore described, the moment the locking member 4: is moved laterally the depending ar1n37 at the opposite end thereof is brought'away laterally from thcdetent 25 which permits the pawl 26 to engage with the wheel 27, thereby locking the repeat unit for rotation with the shaft 1).

We will say that at the time of placing the record upon the turn-table it was determined to repeat the record five times, and at such time the usting lever 51 was moved to a point where the indicator pointer 52 was on 5. This so positioned the arm 48 that its finger 56 lay at a point to be engaged between the fourth and fifth ribs 36 when the indicator feed worm 36 was rotated by the shaft. This single rotation thereby Pi caused to ,returnto ts initial position or recerd' beginning position. Thereupon the causes the indicator arm 41:8 to be shifted one step-to the right. Reverting now to. the

interlockingofthe repeat unit with the shaft as permitted by the disengagement of the .arm 37 from the detent 25, the rotation oi" the r'e'peat unit as just described also produc'es the actuations of the lifting lever 33 and its companion lever 35 so that instead of continuing the inward movement the rec'er as well asthe release member 9 1s line which is the position corresponding to the at enera of the indicator pointer to the numeral}. In the dotted line posit on the "toe ei tension 48 of the arm 48 lies in a plane rearof the arm 37 which normally holds thefdetent 25 in unclutch'ed position."

instead :o fthe detent being caught by th e ain' on this last repeat movement it" comes up ,behind the toe L8 and is held thereby, unclutching the repeat unit from the ,rlifive1 1-sliaftHD and permitting the reproducer to move beyond the point of 'init'ial actuation of the latch lever 4 by the ita-'12; This. continued movement shifts the; lever a until the hook or pawl .15 disengages from the brake. member 1 allow ng the'br'ale inember to co-act with the turn table a'iid stop its movement. g I 'The foregoing describesrepeat operation of the mechanism and it [will ,beobvious .therefrem that the only difference between that. and a single reproduction movement lies infthe fact that in the latter the indicater 51 is 'positionedto. the extreme right positidn'on numeral lwliere the toe 48 holds the detent, therefore during the first reproduction the repeat unit is prevented flfOlll'iQpfiljtttlilg In other words, the member 12 comes in contact with the 'lock- 4 itcauses actuation of the latter until the pawl 1 5 is. disengaged from. the brake';riie mber. In conclusion, I when the member 51 isiadjustedtor repeat action the allow d to assume cooperative position with relation to the arm 48 asshown in Figure 5,

so thation the initial movement of the locking lever the arm 48 is the controlling factor forfthe repeat operations.

Before passing from this description of ,theoperation, it is desired to set forth two developments of features the mechanism wh ch are shown in Figures 11 and 12 respectively.

Instead fo f depending upon. the limited range of adpistment of the screw 47 carried by the lever 4E6 which returns the reproducer to record beginning position, for purposes of adjustment ozf-the mechanism to enable playing of the diiferentstandard sized rec ords,'l[ have devised two adjustable arms 46? andLG" pivotally secured to the lever 46 so as to be moved tromthe inoperative position at one side to a position in advance of; the adjusting screw 47', or operative position. Each of these arms: is provided withan ad-: justing screw 4 so that it is possible to obtain line adjustments insuring the return or the reproducer to the proper point. In

other words, when. an 8 inch. record,', for

example, is to be played, the lever 46 and the screw i7 are all that are necessarytoreturn the arm to record beginning position. If a 10 inch record is to be played the operator need only insert hisha'nd into the cabinet and shift the arm 46 into tsposition'opposite that shown in Figure 11,.or if a 12 inch record istolbe playedthe arm ati is reinirned to the full line position of said figure and the arm46 'shifted'into its full linefpositio n.

shown in said figure to take care of proper movement of the reproducer.

instead of depending upon the adjust ment of the indicatorpointer 11 in a modified position for repeat purposes as de scribed above, I contemplate eliminating ment or modification shown in-Figure 12. To this end. the. pointer 51 has pivotally connected thereto at' an intermediate point thelatch' bar 57, the opposite end of which is slotted at 58 tdengage with the pivot 59 forithe brakepmember 1. This bar is formed with an oli set'hook shaped arm 60,-

one edge 310i which inclinechsaid arm 60 being :adapted to engage behind the "flange 3 of the brakeim'ember when the indicator 51 is moved toward the left for any repeat position, such leftward movement causing the brake member. .to be caught, by the arm '60 and drawn from coaction with the pawl 15. In any repeat the necessity for sodoing by the developoperation, therefore,'the brake fmenibfir will 7 be held in non-brakingpositionluntil the indicator 51 1's moved to its first position when the brake member will be freed and allowed to engagewith the pawl 15 sons to then be under the releasing control of this member: as described hereinbefore With this arrangement when the part 12 impinges fthe lockin,lever 4 liiraking action is immediately produced and simultaneously with the release of the detent bv the 'latch arin .37. The bar 57 is 'providei'l 1 with a second arm 62 which 1s designed tof permit the release of the-brake ;at any time during 1 I desires to I discontinue the fplayii'rg of the record. This is accomplished 'bymove'ment of the reproducer toward record beginning position to bring the arm 13 into contact,

ji epeat operation when'the operator 1 with the arm 62, the continuation Of the return movement of which reproducer arm 153cctromcchaaical operation.

I I have so arranger the mechanism of this invention that it may be either electrically operated or mechanically operated, interchangeably, according to the will of the operator. Each method of operationhas its own advantages. For this purpose 1 position at one side of the locking lever l0 an electromagnet 63 and torm the horizontal portion of the member 48 with an upturned flange 6d acting as an armature cooperative with said magnet. This magnet 1 term the repeat control magnet because it functions for repeat operations only, while 1 have embodied the second magnet 65 in a position at one side of the tail piece 15 which forms a part of the locking pawl 15, the tail piece being provided with a flange 66 constituting the armature for this magnet. In conjunction with the last named magnet I provide circuit breaker, consisting of the closely spaced terminals or discs 67 with wh ch a yieldable circuit closer 68 carried by the brake iien her is adapted to co-act in one position, namely. its non-braking position.

Referring to Figures 8 and 1G, and describing the electric circuit, from a suitable source of current 69 a wire 70 leads to the magnet 62-5 and from said magnet the circuit passes by wire 71 to the contact plate 72 over which the indicator pointer 51 operates. This pointer is provided with a yieldable contact member73, having a p n 74 passing through a suitable openin in position to ride upon the plate 72 which is provided with depressions 75 representing points of adjustment corresponding to the indications 50. Adjacent to this plate 72, which I call the repeat plate, is a secend plate 76, which I call stop plate, the latter being insulated from the first men tioned plate. The plate 76 is connected electrically by the wire 77 with the lower of the circuit breaker discs 78, while the upper disc 79 is connected by the wire 80 to the brake release magnet also in the circuit "from the source of current through the wire 70 and branch wire 81. lhe source of current 69 on the other side is connected by wire 82 to the reproducer arm at 83, the connection being insulated from the reproducer arm itselfbut in electrical circuit with the yieldable support 8-1 for th float X. The supporting loop P of the repro ducer is insulated at 85 so that when the projection O is supported by the loop the circuit is open. grounded as shown at 86, and the yieldable The reproducer M is indicator member 73 is likewise grounded as indicated at 87.

Electrical operation.

in repeat operations where the indicator 51 is adjusted to any position other than upon its first position the point 74 is in contact with the repeat plate 72, so that at one ide the circuit leads from source (59 through wire 70, magnet 63, Wire 71, plate 79, indica tor 51, by 87 to ground. At the other side from the source 69 through wire 82 to the projection 0. where the circuit is held open so long as the reproducer is playing and the projection is out of contact with the loop P which is grounded as shown at 86. Immediately the reproducer reaches the end of the record groove and rides upon the smooth portion of the record the float is shifted until the part 6 comes in electrical contact with the reproducer, immediately energizing the magnet 68 which acts upon the armature 64.- and draws the arm 37 laterally to release the detent 25 with the result which has hereinbefore been described of setting the repeat unit into operation and moving the reproducer arm to record beginning position. Diiiring elevation and return movement of 'the-reproducer the projection O rests upon the insulation 85 and the circuit is open. This continues to electrically operate in this manner until the indicator pointer 51 is brought to its right-hand position on 1 when the point 74 will stand upon the stop plate 76. The repeat magnet 65 is thus made inoperative and immediately the reproducer reaches the end of the record groove effect ing closing of the contact 0 with the reproducer, the circuit from source 69 passes through wires 70 and S1 to brake release mag net 65, from the latter to circuit breaker 6? through the circuit closer 68 of the brake member, to wire 77 leading to plate 76, through indicator 51 to ground. The closing of the circuit in this manner energizes the magnet 65 which pulls the armature 66 in the direction to actuate the pawl 15 which is withdrawn from engagement with the flange 3 of the brake member and the brake applied. Immediately the brake is in braking position the circuit above described is interrupted by shifting of the closing mem ber 68 away from the circuit breaker 67.

It will readily be appreciated from the foregoing that the electrical operation very readily cooperates with the mechanical operation, excepting that the function of releasing the bralre member by the part 12 now dispensed with.

Auxiliary brake crravrr cwimt.

One remaining feature remains now to be described which has reference to the provision for manually operating or applying the brake at any time desired during reproduction operation. For example, if the particular record is not pleaslng the operator may cause discontinuance oi theplaymg by} ele-- vating the reproducer fromthe record through the handle I, shifting the reproducer in reverse direction toward record be ginning position which results in the contact of the arm 13 with the brake setting arm 7, which latter arm 15 formed on theother side,

of its pivot with an otl'standing arin'Z, the

latter arm by continued rotation of the reproduc'er and movement of the arm' 13 be ing'shii'ted 1nto contact with the tail piece or projection 15* of the locking pawl 15; Contact between these partsinvolves obviously which, instead of being supplied with a plurality of interrupted ribs or threads, 1S

.i ormed with only a single thread the pitch of whichissuch as to provide forproper coaction withthe indicator arm to feed the same step by step.

It should be noted that While I have referred to the'element indicated 4: as a locl ing member and to the part 15 as a locking pawl, I comprehend by the use of the term ""latch means in the specification and claims where it occurs both oi'these parts broadly, so that where the last mentioned v termsoccurs it is the unit-as a whole that is referred to.

"Having thus described my invention, what I claim as new and desire to secure by Letters Patent-of the United States, is: I

1. lncoiitrol mechanism for sound reproducing machines having a record support and a reproducer, the combination of a brake member, latch means l or holding said mem berin non-braking position, means operable synchronously with the playing movement of the reproducer into position for actuating the latch means. to unlatclr'said brake mcmber,and ans controlled by said latch means for interrupting the unlatching ducer.

2. Incontrol mechanism for sound reproducing machines having a record support and. a 'reproducer, the combination of a brake member, latch means for holding said brake "inovementor' the latch means to reversethe movement of the brake member unlatchmg means and thereby prevent setting ot the brake,

' in control mechanism tor sound reprohave shown a modified form oi'iindlcator feed worm designated 36- ducing machines havinga record .su port alre member, latch means for holding saidbrake member in non-braking position, release n'ieans operable during playing movement of v the rcproducer into preliminary contact with and a reproducer, the combination of a the latch means, and means for returning the reproducer to initial position, sa d returning means being set 1nto motion by the preliminary;contact of the release means as,

aforesaid whereby conngleterele'ase of the brake nto bralrmg position is prevented.

In'control mechanism for sound repro dumg machines having a record support and a reproducer, the combination of a brake member, a latch means adapted to interlock with the brake member to-hold the same in non-braking position, and motor driven means controlled by said latch means and operable at a predeterm ned point in the traverse of the reproducer in playing for elevating and lowering thereproducer, in-

eluding means for actuating the reproducerf to reverse its traverse between such elevat ing and lowering movements of the reproducer. v in automatic repeat mechanism for sound reproducing machines, the combination with a record support and reproducer,

ot' a bralre member, latching means for hold ingthe brake member in non-braking position, mechanism for imparting traverse or the re n'oducer across the record in playing, and repeat mechanism cooperating with the last named mechanism, including means for elevating the reproducer out of contact with the record and returning thereproducer to record beginning positionunder the control of the latching means said repeat mechanism rendering the traverse imparting means oi the reproducer temporarily inoperative during return movement of the reproducer.

6. In automatic repeat mechanism for sound reproducing machines, "the combin'a- -tionwith a record su'pportgand reproducer,

of a brake member, latchingmeans for hold- I ing' 'the brake member in nonbralring posi-f movement aforesaid and reversing the reprotion, mechanism for imparting traverse of I means aforesaid and returning the repro-..

ducer to record beginning position.

"Z'. In automatic repeat 'mechanismfor tion with a recordsupportand rep'roducer, of a brake member, latch ng means for holding the brake. member in non-braking posi tion, n echanism for iimparting traverse 01 the reproducer across therecord in-playing, and repeatmechanism {including means for elevating the reproducer out of contact with sound reproducing m'achines, the combina the record under the control of the latch means aforesaid and returning the reproducer to record beginning position and finally lowering the reproducer into contact With the record for repeat movement.

8. I11 control mechanism for sound reproducing machines having a record support and a reproducer, the combination of a brake member, latch means for holding said member in non-braking position, means operable synchronously with the playing movement of the reproducer into position for actuating the latch means to unlatch said brake member, and means for rendering the holding function of the latch. means ineffective at a predetermined time to thereby permit completion of the unlatching movement and application of the brake.

9. In repeat mechanism for sound reproducing machines having a record support and reproducer, the combination of a brake member, latch means for holding said brake member in non-braking position, and means initially cooperative with the latch means to produce repeat operation and subsequently cooperative With latch means to effect braking action.

10. In repeat mechanism for sound reproducing machines having a record support and reproducer, brake mechanism, means for elii'ecting repeat operation of the reproducer,

and latch means common to the brake and repeat mechanisms, said latch means being preliminarily operative to permit of repeat operation and subsequent release of the brake mechanism.

11. In repeat mechanism for sound reproducing machines having a record support and reproducer, brake mechanism, means for effecting repeat operation of the reproducer, latch means common to the brake and repeat mechanism, said latch means being preliminarily operative to permit of repeat operation, and means for rendering the latch means inefi'ective to control the repeat'operation.

12. In repeat mechanism for sound reproducing machines having a record support and reproducer, brake mechanism, means for effecting repeat operation of the reproducer, latch means common to the brake and repeat mechanism, said latch means being prelin'iinarily operative to permit of repeat operation, and means for rendering the latch means ineiiective to control the repeat opera tion, said means simultaneously rendering the brake mechanism operative as an incident of the movement of the reproducer in repeat operation.

13. In control mechanism for sound reproducing machines including a. record support and reproducer, the combination of a brake member, means for setting said brake memher in non-braking position, a latch means for holding said brake member in said position, motor driven means for effecting traverse oi? the reproduceracross the record, a clutch device, repeat mechanism controlled from. said clutch device, means carried by said latch means and cooperative with said clutch device for maintaining the repeat mechanism normally inoperative, and means for actuating the last mentioned means when the reproducer approaches the termination of the record to render the clutch device operative to connect the repeat mechanism with the motor driven means and thereby effect return of the reproducer to record beginning position.

14. Mechanism as claimed in claim 18, wherein the actuating means moves synchronously with. the reproducer until it approaches the end of the record and co-acts with the latch means to impart preliminary movement thereto and clutching operation of the clutch device.

15. Mechanism as claimed in claim 13, combined with means adapted to cooperate with the clutch device at a predetermined time whereby the actuating means Will operate to shift the latch means and release the l "alre member for braking operation.

16. Mechanism as claimed in claim 13, wherein the means carried by the latch means comprises an arm arranged to cooperate with the clutch device to hold it in unclutchcd position, and means operable step by step by the repeat mechanism until interposed between the clutch device and the arm aforesaid whereby the latch means may release the brake for braking operation.

17. In control mechanism for sound reproducing machines including a record support and reproducer, brake mechanism including a latch means for holding the same in nonbraking position, repeat mechanism operable when the reproducer approaches the termination of the record, a repeat control device adapted to determine the repeat operations, and means for actuating the latch means upon completion of the repeat operations to permit the brake mechanism to assume braking position.

18. Mechanism as claimed in claim 17, wherein the repeat control device is adapted to be adjusted to determine the repeat operation and is shifted step by step by the repeat mechanism, said device including a part rendering the actuating means for the latch means operative upon completion of the repeat operation.

19. Mechanisn'i as claimed in claim 17, wherein the locking member is provided With a clutch controlling arm shiftable by the the function of the clutch controlling arm aforesaid whereby to permit said actuating means tov further shift the latch means and release the brake mechanism for braking operation.

20. Mechanism as claimed in claim 17, wherein the repeat mechanism comprises means controlled through the latch means for raising and lowering the reproducer with -respect to the record support and for shift in}; the reproducer to record beginning position. v

21, Mechanism as claimed in claim 17 wherein I the repeat mechanism comprises means for raisingand lowering the reprodueer with respect to the record support and for shifting the reproducer to record beginning position, and separate means for feeding the repeat control device step by step in each repeat operation.

22, In control mechanism for sound reproducing machines including a recordsupport and reproducer, .bralremechanism including a brake member, motor driven ,meansfor moving the reproducer during operation of the record, a latch deplaying vice for holding the brake n'iember in nonbi'aking position and having a clutch controlling arm, repeat mechanism comprising a unitlcoinposed of a clutch device cooperative with the motor driven means and held by the arm aforesaid in unclutched position and a feed element,-a repeat'control device including anindicator adjustable to determine the repeat, operations and means adapted to co-act with the clutch device upon the completion of the repeat opera tions to prevent cooperation of the arm aforesaid with the clutch device, and means for actuating the latch devicewhen the last part movable to shift the brake member into non-braking position during preliminary movement of the reproducer toward playing position, said rotary part being adapted to co-ac't with the latch means upon continued operation of the reproducer in playing to shift said relatively movable brake-memberengaging part to releasesaid brake member for braking operation.

24;. In control mechanism for sound reproducing machines havinga motor'driven record support and traveling sound reproducer, automatic stop mechanism coinp'i ising a brake memberelatch means associated therewith including a relatively movable 7 part engageable \Vltll the brake member Y when the latter is shifted to non-brakii'ig position; a motor driven rotary part movable to shift the brake member into non? brakinp position during prel minary movement or the reproducer toward playing position, said rotary part being adapted to co-act with the latch means upon continued operation of the reproducer in playing shift said relatively movable brake-member engaging part to release said brake member for braking operat on, a repeat unit adapted to be actuated when the reproducer ap- 'f preaches the termination of the record, sa d unit comprising means operativelyj connected to the reproducer to elevate and return the same to record beginning positio'ii' incident to 'co-action of the rotary part with the latch means, and a part operable by thcf' latch means when the rotary part aforeg said co-acts therewith to render the repeat unit operative;v

25. producing machines having a'mojtor driven record support and traveling sound repro- In control mechanism for sound re ducer, automatic stop mechanism compris ing a bra-lie member, latch means asse iated therewith including a relatively 'mota'ble part engageable with the brake member sition;a motor driven rotary'part movable to shift the brake member into non-braking position during preliminary movement of the reproducer toward playing position, said rotary part being adapted to co-act with the latch. means upon continued operation of the reproducer in playingto shift said relatively movable brake-member-engaging part to release said brake member for braking operation, a repeat unit adapted to be actuated when the reproducer'approaches the termination of the record, said unit comprising means operatively connected to the re producer to elevate and return the sameto record beginning position incident to co-action of the rotary part with the latch means, a part operable by the latch means when the rotary part aforesaidcoacts when the latter is shifted to non-braking potherewith to render the repeat unit operative and an indicator controi device for" determining the repeat operations, said iiidicator device I including an adjustable slide and arm. adapted to cooperatew1th:the'repeat unit aforesaid to be fed thereby "in I repeat operations into position to prevent the operation of the partactuated by, the latch means,whereby the rotary part will impart sufficient movement to i the latch means to produce releaseof the brake ,nie n her and braking operation.

26. In combination withthe sound reproducing machine having a motor driven, recmay be shifted from co-action with the record, and indicator means associated with said repeat unit including a part cooperative with theindicator feed member and shiftable step by step thereby to control the repeat operations.

27.111 automaticcontrol for sound reproducing machines, the combination of a brake member, latch means for-holding said brake member in non-braking position, a rotary' part 'shiftable during preliminary movementof the reproducer to playing position for setting said brake member in non-braking position, said rotary part being movable to release the brake member upon cooperation with the latch means aforesaid, and

means with which said rotary part is adapted to co-act upon movement oi the reproduccr 1n the reverse direction to that for playing to disengage said latch means and thereby release the braking member.

28. In automatic stop mechanism for sound reproducing machines, the combination of a brake member, latch means cooperative therewith to hold the brake member in non-braking position, a part connected to the brake member for setting the latter and having means engageable with the latch means to release said brake member, and a rotary part adapted to co-act with said brake member part to shift the brake memher into nonbraking position upon move ment' of the rotary part in one direction and to'co-act with said brake member part upon movement in the opposite direction to release said brake member from the latch means.

29. In repeat mechanism for sound reproducing machines including a motor driven record support and traveling sound reproducer, the combination of brake mechanism, repeat mechanism, and a controldevice including means for eiiecting repeat operation and separate means for effecting operation of the brake mechanism under the control of the reproducer.

30. In repeat mechanism for sound reproducing' machines including a motor driven record support and traveling sound reproducer, the combination of brake mechanism,

repeat mechanism, and a control device including means for effecting repeat operation and separate means for effecting operation of the brakemechanism.

'31. In repeat mechanism for sound reproducing machines including-a motor driven support and traveling sound reproducer, the

con'ibination of brake mechanisn'i, repeat mechanism. and controlling; means common to said brake and repeat mechanisms including an electric circuit and separate circuit closing terminals, and a part adjustable with respect to said terminals to control either the repeat mechanism or the brake mechanism according to its coaction with therespective terminals.

32. In repeat mechanism for soundreproducing machines having a motor driven record support and a traveling sound reproducer, the combination of brake mechanism, repeat mechanism, and control means commonto said mechanisms and including; an electric circuit, a repeat mechanism terminal in circuit with the repeat mechanism and a separate terminai in circuit with the brake mechanism and circuit closing means movable with relation to said terminals to effect repeat or brake operations according to its adjustment with respect to said terminals.

In automatic control mechanism for sound reproducing machines including a motor driven record support and traveling sound reproducer. the combination of brake v mechanism, including an electromagnet, an electric circuit therefor and a circuit closing part, repeat mechanism including an electromagnet, a circuit therefor and a circuit closing part, and means adjustable with respect to said circuit closing parts to determine repeat or brake operations under the control of the reproducer;

34. In control mechanism for sound reproducing machines having a motor driven record support and traveling sound reproducer, the combination. of brake and repeat means, an electric circuit in which both said means are included, said reproducer being also included in the electric circuit, and a circuit closing member for said circuit adjustable to effect closing of the circuit for either repeat.

36. In control mechanism for sound reproducing machines having a motor driven rec- 0rd support and traveling sound reproducer,

the combination of brake means, an electric circuit in which said brake means isincluded, said reproducer being; also included in the electric circuit, a circuit closing member for said circuit adjustable to effect closing of the circuit for either brake or repeat operations,

. and a circuit breaker arranged in the circuit for the brake means and adapted to assume circuit closing position when the brake means 'isshifted into non-braking position, and to maintain such circuit closed position during repeat operations, said brake means being operable upon movement of the reproducer in its travel over therecord support to release the brake means for braking operation, whereby the circuitbreaker will be caused to assume circuit broken position.

37. In control mechanism for sound repro= ducing machines having a motor'driven recrd support and travelingsound i'epro'ducer, the combination of brake means including an electroinagnet, a brake member, a locking member therefor and an electric circuit, said reproducer being included in said circuit, re

peat mechanism including an electromagnet and an electric circuit, a circuit closing member for closing the repeat and bralzemechanism circuits'm accordance with predeter- 'mined adjustment'of-said circuit closing tofrelative movement between therepro- HUI member, and a circuit breaker arranged in circuit for the brake means and adapted to assume circuit closing position'wh'en brake means isshifted into non-braking position, said circuit breaker being operable with the brake means to break the circuit when said braking ineans'is'actuated to apply the brake.

38. In control mechanismfor sound reproducing machines, the combination with a reproducing member and support, of brake and repeat means operable incident to relative movement between'the reproduc ducer and its support effecting the closing of the proper circ'uitof the respective means.

41. In control mechanism for sound reproducing machines, the combination of a movable reproducing member and support therefor, repeat and brake means, of an electric circuit including said repeat means, brake means, the reproducing member and support, the circuit being maintained'open while the reproduc ng member is in playing position,said'circuit being closed upon such movement of the reproducing member as is incident to its movement from the sound gr'ooveof the record, applying the brake and rendering the repeat means inoperative.

4.2. In control mechanism for sound-reproducing machines, the' combination With a reproducer and support, including a free floating reproducing memb r and .brake means, of'repeat means an'electric circuit in which said reproducer, support and ,free

floating member and brake, and repe'at means are included, the circuitabein'g' closed upon relative movement of the free floating member with respect to the'reproducer support whereby to set .into operation either the'repeat or the brake "means;

43. In control 'mechanism for sound re producing machines, the. combination of a reproducer, electrically operated brake and repeat means includingan electric circuitinwhich said reproducer is included, and a circuit breaker-for maintaining the circuit broken when the brake is in brake applied position,.said repeat means including mov able member'controlling the operation; of

the brake means;

44. In control mechanism producing machines, a reproducer, bralre mechanism, repeat mechanism, an'jelectric' for 'sound' recircuit including said reproducer,the repeat and brake mechanisms, said circuit being maintained open'by the reproducer' dur ng playing operations, and .a circuit breaker for maintaining the circ'uitmopen during nonplaying.

45. In control mechanism for soundre- PI'OClHCHI IDELOl11HGS,tl1G combination of a reproducer, a record support, a brake'mem her for controlling the movement of said.

support, repeat mechanism, an electric circuit in which said reproducer repeat mechanism and brake member are included, said a electric circuit being closed under the con j trol of the reproducerfor either brake, on

repeat operations, and means controlled by the brake memberfor maintaining the ciri,

cuit open when the brake is applied 46. In control mechanism for soundre-j producing machines, including a repro- 'duce'r, the combination with repeat mechanism, of means for predetermining the record-beginning position-of the repro- I ducer, said means being inaintainedflinop erative during repeat'operat onsi 47. In control .mechanism for sound reproducing machines, including a reproducer, thecombination with brake an'cl'ie-Z peat mechanisms, (it/means for predetermining record'beginning pos tion of thereproducer, and means, for preventing functioning of the last named means during repeat operations while maintaining the brake mechanism operativeupon completion of such repeat operations. v

4:8..In control mechanism for sound Treproducing machines, in'cludingareproducer,'

feed mechanism-therefor to cause-traverse of the reproducer with respect tothe record support, of brake mechanism including a brake member automatically shiftable into non-braking position as an incident to movement of the reproducer into playing position, repeat mechanism, and means for predetermining the record-beginning position of the reproducer, said means being maintained inoperative during repeat op erations while the brake mechanism is main tained operative upon completion of the repeat operation.

49. In control mechanism for sound reproducing machines, including a reproducer, feed mechanism therefor to cause traverse of the reproducer with respect to the record support, of brake mechanism including a brake member automatically shiftable into non-braking position as an incident to movement of the reproducer into playing position, repeat mechanism, and means for predetermining the record-beginning position of the reproducer, and means for preventing the functioning of the last named means during repeat operations while'maintaining the brake mechanisi n operative upon completion of such repeat operations.

50. In control mechanism for sound reproducing machines, the combination of a brake member movable into non-braking position, repeat mechanism including an adjustable. member for predetermining the number of repeat operations, and brake retaining means connected to said adjustable member for holding the brake member in its non-braking position, said brake retaining means being shiftable by the adjustable repeat member to release the brake for brakin operation.

51. l n control mechanism for sound reproducing machines including a reproducer and a part movable synchronously with the reproducer, the combination of a brake member, repeat mechanism including an adjustable member for predetermining the number of repeat operations and movable step by step incident to the repeat operations, a brake-retainingmember connected to saidadjustable repeat member and having a art adapted to engage and hold the brake in non-braking position, and a second part with which the first-mentioned part movable synchronously with the reproducer is adapted to co-act upon movement of the reproducer toward record-beginning position to effect release of the brake for braking operation and simultaneous normalizing of the adjustable repeat member.

In testimony whereof I afiix my signature.

THOMAS H. LOY. 

